@techreport{decnodder-dhc-rai-unicast-01,
    number =    {draft-decnodder-dhc-rai-unicast-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-decnodder-dhc-rai-unicast/01/},
    author =    {Stefaan De Cnodder and Patrick Mensch},
    title =     {{Unicast Address Sub-Option}},
    pagetotal = 15,
    year =      2006,
    month =     aug,
    day =       21,
    abstract =  {In some network topologies, it is preferred to have a trusted network element between the DHCP client and the L3 relay agent that adds the DHCP relay-agent-information option but does not set the giaddr field. They operate in Layer 2 mode and hence act as trusted Layer 2 relay agents. The replies from the server are broadcasted by the L3 relay agents to these L2 relay agents which must be avoided. This document defines a new sub-option for the relay-agent-information option. With this sub-option, the L3 relay agent will always unicast the messages towards the trusted layer 2 DHCP relay agent with a hardware address that is known in the network. The new sub-option is called the "unicast-address" sub-option.},
}